Date of Award


Document Type

Master Thesis

Degree Name

Master of Engineering (Research)


Civil, Structural & Environmental Engineering

First Advisor

Mr. Des Walsh


Solid slab deck bridges are a common type of structure employed for short to medium span bridges. They may be of rapid build nature if they are made up of prestressed precast sections with concrete infill deck.

The aim of this research was to investigate the potential to increase the span of solid slab deck bridges by the employment of high strength concrete (HSC), lightweight aggregate concrete (LWAC) and the use of a voided deck.

The analysis undertaken in the research was based on a bridge, which was recently constructed in Cork; the bridge was constructed using MY beam sections, which were subsequently used in the analysis.

The analysis was undertaken in a parametric study which firstly involved the analysis of the constructed structure. Once the original structure was analysed the material properties and bridge span were altered for further schemes. In total six bridge schemes were analysed.

The analysis involved carrying out grillage analysis on each scheme in order to determine the actions of the bridge i.e. bending moments and shear forces. Once the grillage analysis was complete a prestressed section analysis was undertaken to verify that the beam was able to cope with the forces induced on it. The section analysis undertaken included serviceability limit state (SLS) design and ultimate limit state (ULS) design in accordance with EN1992 and loading in accordance with EN1991.

The results of this study proved very positive in terms of increasing span. Full results and explanations may be found in chapter five of this report.

Previous Versions

Aug 2 2022

Access Level